Table 1: Log of the observations.
Date UT time Filter/ Exp. Frames Mean

Grating (s) mag

HS 0139+0559

Spectroscopy: Calar Alto 3.5 m and B and C

1989 Jan. 22 19:21 120 Å/mm 900 1 -

Spectroscopy: Calar Alto 3.5 m and TWIN

2002 Oct. 28 23:53-00:03 T08/T01 300 1 -

2002 Oct. 29 22:36-03:21 T05/T06 600 16 -

Spectroscopy: Calar Alto 2.2 m and CAFOS

2003 Dec. 24 18:25-00:10 G-100 600 27 $\simeq$ 15.4

2003 Dec. 26 18:34-20:48 G-100 600 12 $\simeq$ 15.1

Spectroscopy: Hamburg-Schmidt telescope at Calar Alto

1981 Nov. 01 - Prism 3600 1 $\simeq$ 14.9

1981 Nov. 02 - Prism 3600 1 $\simeq$ 14.9

Photometry: Braeside Observatory

1999 Dec. 30 02:15-07:04 R 70 293 -

2000 Jan. 04 02:31-06:04 B 50 136 -

HS 0229+8016

Spectroscopy: Calar Alto 2.2 m and B and C

1992 Aug. 08 03:16 900 1 $\simeq$ 15.0

Spectroscopy: Calar Alto 2.2 m and CAFOS

1998 Oct. 05 01:37 B-200 1800 1 $\simeq$ 13.7

2003 Dec. 14 19:18-00:55 G-100 600 24 $\simeq$ 14.2

2003 Dec. 16 20:21-03:08 G-100 600 27 -

2003 Dec. 23 18:49-21:01 G-100 600 12 $\simeq$ 14.5

2003 Dec. 26 21:34-22:53 G-100 600 7 $\simeq$ 14.1

2003 Dec. 27 18:46-19:22 G-100 600 4 $\simeq$ 13.7

Spectroscopy: Hamburg-Schmidt telescope at Calar Alto

1986 Nov. 05 - Prism 3600 1 $\simeq$ 14.4

1986 Nov. 06 - Prism 3600 1 $\simeq$ 14.2

1994 Nov. 12 - Prism 3600 1 $\simeq$ 14.6

Photometry: Kryoneri Observatory

2002 Sep. 20 01:30-03:28 R 5 840 $\simeq$ 14.2

2002 Sep. 20 22:37-03:27 R 5 1680 $\simeq$ 14.3

Photometry: Tuorla Observatory

2003 Jan. 10 15:41-23:45 Clear 30 695 $\simeq$ 14.3

HS 0506+7725

Spectroscopy: Calar Alto 3.5 m and TWIN

2002 Dec. 03 03:22-05:09 T05/T06 600 10 -

Spectroscopy: Calar Alto 2.2 m and CAFOS

1998 Feb. 02 19:43 B-400 180 1 -

2002 Dec. 09 00:19-00:30 G-100 600 2 $\simeq$ 15.4

2003 Dec. 13 23:25-03:53 G-100 600 23 $\simeq$ 14.7

2003 Dec. 15 01:34-06:13 G-100 600 23 $\simeq$ 14.9

2003 Dec. 17 03:40-05:57 G-100 600 12 -

2003 Dec. 23 22:19-00:31 G-100 600 12 $\simeq$ 14.9

2003 Dec. 26 02:52-03:28 G-100 600 4 $\simeq$ 14.9

Spectroscopy: Hamburg-Schmidt telescope at Calar Alto

1987 Oct. 29 - Prism 3600 1 $\simeq$ 15.1

1994 Jan. 12 - Prism 3600 1 $\simeq$ 15.3

1995 Oct. 23 - Prism 3600 1 $\simeq$ 18.3

Photometry: Kryoneri Observatory

2002 Oct. 08 22:46-01:25 R 10 599 $\simeq$ 15.2

Photometry: Tuorla Observatory

2003 Jan. 04 16:13-20:16 Clear 120 32 $\simeq$ 15.7

2003 Jan. 06 15:47-20:46 Clear 60 213 $\simeq$ 15.8

2003 Jan. 16 20:18-22:40 Clear 60 115 $\simeq$ 15.9

Photometry: OGS

2003 Nov. 15 03:21-06:37 Clear 5 1110 $\simeq14.6$

Photometry: Calar Alto 2.2 m and CAFOS

2003 Jan. 01 01:01-03:24 V 30 85 $\simeq$ 15.1

2003 Dec. 16 00:05-05:11 Clear 15-30 346 $\simeq$ 14.8

2003 Dec. 25 19:15-02:29 Clear 15-30 296 $\simeq$ 14.9

2003 Dec. 27 04:03-06:16 Clear 20 149 $\simeq$ 14.9

2003 Dec. 27 20:33-23:55 Clear 20 288 $\simeq$ 14.8

HS 0642+5049

Spectroscopy: Calar Alto 2.2 m and CAFOS

1999 Mar. 07 19:11 B-400 300 1 -

2003 Apr. 27 20:03-21:53 G-100 600 9 $\simeq$ 15.6

2003 May 10 20:20-21:21 G-100 600 6 -

2003 May 11 20:17-21:20 G-100 600 6 -

2003 Dec. 25 00:56-05:35 G-100 600 24 $\simeq$ 15.5

2003 Dec. 27 02:50-03:01 G-100 600 2 $\simeq$ 15.3

2004 Oct. 24 02:12-05:26 G-100 600 17 $\simeq$ 15.3

2004 Oct. 26 04:25-05:31 G-100 600 7 $\simeq$ 15.4

Spectroscopy: INT 2.5 m and IDS

2003 Apr. 25 21:21-22:14 R632V 600 6 -

2003 Apr. 26 21:17-21:49 R632V 600-900 4 -

2003 Apr. 28 21:15-22:08 R632V 600 6 -

Spectroscopy: Hamburg-Schmidt telescope at Calar Alto

1991 Nov. 10 - Prism 3600 1 $\simeq$ 15.8

1993 Oct. 24 - Prism 3600 1 $\simeq$ 16.0

Photometry: Tuorla Observatory

2003 Dec. 30 19:58-21:06 Clear 120 46 $\simeq$ 15.4

2004 Jan. 01 18:37-23:27 Clear 60 250 $\simeq$ 15.5

Photometry: Calar Alto 2.2 m and CAFOS

2003 Dec. 26 04:20-06:14 Clear 20-30 149 $\simeq$ 15.6

2004 Oct. 22 04:01-05:25 Clear 15 59 $\simeq$ 15.7

2004 Oct. 25 01:42-05:51 Clear 10-15 463 $\simeq$ 15.5

Photometry: IAC80

2004 Dec. 02 04:01-05:00 Clear 10 150 $\simeq$ 15.4

2004 Dec. 07 05:10-06:11 Clear 15 139 $\simeq$ 15.3

2004 Dec. 08 01:00-04:41 Clear 10 528 $\simeq$ 15.3

2004 Dec. 09 00:13-05:14 Clear 10 738 $\simeq$ 15.3

**Table 1:** Log of the observations.
Date	UT time	Filter/	Exp.	Frames	Mean
		Grating	(s)		mag
HS 0139+0559
Spectroscopy: Calar Alto 3.5 m and B and C
1989 Jan. 22	19:21	120 Å/mm	900	1	-
Spectroscopy: Calar Alto 3.5 m and TWIN
2002 Oct. 28	23:53-00:03	T08/T01	300	1	-
2002 Oct. 29	22:36-03:21	T05/T06	600	16	-
Spectroscopy: Calar Alto 2.2 m and CAFOS
2003 Dec. 24	18:25-00:10	G-100	600	27	$\simeq$ 15.4
2003 Dec. 26	18:34-20:48	G-100	600	12	$\simeq$ 15.1
Spectroscopy: Hamburg-Schmidt telescope at Calar Alto
1981 Nov. 01	-	Prism	3600	1	$\simeq$ 14.9
1981 Nov. 02	-	Prism	3600	1	$\simeq$ 14.9
Photometry: Braeside Observatory
1999 Dec. 30	02:15-07:04	R	70	293	-
2000 Jan. 04	02:31-06:04	B	50	136	-
HS 0229+8016
Spectroscopy: Calar Alto 2.2 m and B and C
1992 Aug. 08	03:16		900	1	$\simeq$ 15.0
Spectroscopy: Calar Alto 2.2 m and CAFOS
1998 Oct. 05	01:37	B-200	1800	1	$\simeq$ 13.7
2003 Dec. 14	19:18-00:55	G-100	600	24	$\simeq$ 14.2
2003 Dec. 16	20:21-03:08	G-100	600	27	-
2003 Dec. 23	18:49-21:01	G-100	600	12	$\simeq$ 14.5
2003 Dec. 26	21:34-22:53	G-100	600	7	$\simeq$ 14.1
2003 Dec. 27	18:46-19:22	G-100	600	4	$\simeq$ 13.7
Spectroscopy: Hamburg-Schmidt telescope at Calar Alto
1986 Nov. 05	-	Prism	3600	1	$\simeq$ 14.4
1986 Nov. 06	-	Prism	3600	1	$\simeq$ 14.2
1994 Nov. 12	-	Prism	3600	1	$\simeq$ 14.6
Photometry: Kryoneri Observatory
2002 Sep. 20	01:30-03:28	R	5	840	$\simeq$ 14.2
2002 Sep. 20	22:37-03:27	R	5	1680	$\simeq$ 14.3
Photometry: Tuorla Observatory
2003 Jan. 10	15:41-23:45	Clear	30	695	$\simeq$ 14.3
HS 0506+7725
Spectroscopy: Calar Alto 3.5 m and TWIN
2002 Dec. 03	03:22-05:09	T05/T06	600	10	-
Spectroscopy: Calar Alto 2.2 m and CAFOS
1998 Feb. 02	19:43	B-400	180	1	-
2002 Dec. 09	00:19-00:30	G-100	600	2	$\simeq$ 15.4
2003 Dec. 13	23:25-03:53	G-100	600	23	$\simeq$ 14.7
2003 Dec. 15	01:34-06:13	G-100	600	23	$\simeq$ 14.9
2003 Dec. 17	03:40-05:57	G-100	600	12	-
2003 Dec. 23	22:19-00:31	G-100	600	12	$\simeq$ 14.9
2003 Dec. 26	02:52-03:28	G-100	600	4	$\simeq$ 14.9
Spectroscopy: Hamburg-Schmidt telescope at Calar Alto
1987 Oct. 29	-	Prism	3600	1	$\simeq$ 15.1
1994 Jan. 12	-	Prism	3600	1	$\simeq$ 15.3
1995 Oct. 23	-	Prism	3600	1	$\simeq$ 18.3
Photometry: Kryoneri Observatory
2002 Oct. 08	22:46-01:25	R	10	599	$\simeq$ 15.2
Photometry: Tuorla Observatory
2003 Jan. 04	16:13-20:16	Clear	120	32	$\simeq$ 15.7
2003 Jan. 06	15:47-20:46	Clear	60	213	$\simeq$ 15.8
2003 Jan. 16	20:18-22:40	Clear	60	115	$\simeq$ 15.9
Photometry: OGS
2003 Nov. 15	03:21-06:37	Clear	5	1110	$\simeq14.6$
Photometry: Calar Alto 2.2 m and CAFOS
2003 Jan. 01	01:01-03:24	V	30	85	$\simeq$ 15.1
2003 Dec. 16	00:05-05:11	Clear	15-30	346	$\simeq$ 14.8
2003 Dec. 25	19:15-02:29	Clear	15-30	296	$\simeq$ 14.9
2003 Dec. 27	04:03-06:16	Clear	20	149	$\simeq$ 14.9
2003 Dec. 27	20:33-23:55	Clear	20	288	$\simeq$ 14.8
HS 0642+5049
Spectroscopy: Calar Alto 2.2 m and CAFOS
1999 Mar. 07	19:11	B-400	300	1	-
2003 Apr. 27	20:03-21:53	G-100	600	9	$\simeq$ 15.6
2003 May 10	20:20-21:21	G-100	600	6	-
2003 May 11	20:17-21:20	G-100	600	6	-
2003 Dec. 25	00:56-05:35	G-100	600	24	$\simeq$ 15.5
2003 Dec. 27	02:50-03:01	G-100	600	2	$\simeq$ 15.3
2004 Oct. 24	02:12-05:26	G-100	600	17	$\simeq$ 15.3
2004 Oct. 26	04:25-05:31	G-100	600	7	$\simeq$ 15.4
Spectroscopy: INT 2.5 m and IDS
2003 Apr. 25	21:21-22:14	R632V	600	6	-
2003 Apr. 26	21:17-21:49	R632V	600-900	4	-
2003 Apr. 28	21:15-22:08	R632V	600	6	-
Spectroscopy: Hamburg-Schmidt telescope at Calar Alto
1991 Nov. 10	-	Prism	3600	1	$\simeq$ 15.8
1993 Oct. 24	-	Prism	3600	1	$\simeq$ 16.0
Photometry: Tuorla Observatory
2003 Dec. 30	19:58-21:06	Clear	120	46	$\simeq$ 15.4
2004 Jan. 01	18:37-23:27	Clear	60	250	$\simeq$ 15.5
Photometry: Calar Alto 2.2 m and CAFOS
2003 Dec. 26	04:20-06:14	Clear	20-30	149	$\simeq$ 15.6
2004 Oct. 22	04:01-05:25	Clear	15	59	$\simeq$ 15.7
2004 Oct. 25	01:42-05:51	Clear	10-15	463	$\simeq$ 15.5
Photometry: IAC80
2004 Dec. 02	04:01-05:00	Clear	10	150	$\simeq$ 15.4
2004 Dec. 07	05:10-06:11	Clear	15	139	$\simeq$ 15.3
2004 Dec. 08	01:00-04:41	Clear	10	528	$\simeq$ 15.3
2004 Dec. 09	00:13-05:14	Clear	10	738	$\simeq$ 15.3

Source LaTeX | All tables | In the text

	1 Introduction
	2 CVs in the Hamburg Quasar Survey
	3 Observations and data reduction
	4 Analysis
	5 Discussion
	6 Conclusions
	References
	Online Material